diff --git a/resources/install/scripts/resources/functions/database.lua b/resources/install/scripts/resources/functions/database.lua
index 89b5456193..f8939126ff 100644
--- a/resources/install/scripts/resources/functions/database.lua
+++ b/resources/install/scripts/resources/functions/database.lua
@@ -27,7 +27,11 @@ function Database.new(name)
 end
 
 function Database:query(sql, fn)
-	return self._dbh:query(sql, fn)
+	if (fn == nil) then
+		return self._dbh:query(sql)
+	else
+		return self._dbh:query(sql, fn)
+	end
 end
 
 function Database:first_row(sql)